Citazione Stile APA (7a Edizione)

(1988). Inventors and discoverers: Changing our: World. National Geographic Society.

Citazione stile Chigago Style (17a edizione)

Inventors and Discoverers: Changing Our: World. Washington D.C.: National Geographic Society, 1988.

Citatione MLA (9a ed.)

Inventors and Discoverers: Changing Our: World. National Geographic Society, 1988.